“White-letter” poster type released around 1892.

“The ‘White-Letter’ was a reverse letter often referred to as a ‘Streamer’ in the United States. Claire Bolton of the Alembic Press wrote that, while the idea of the reversed letter was not new…‘this type of letter always gave problems on the joins where there was a tendency for white lines between the charters to show. RDD had invented a way of joining the letters within the white downstrokes of each character which minimized the problem and almost eliminated it altogether.’” — David Shields